Squeeze-roll.



A. J. CHARLTON.

SQUEEZE ROLL.

APPLICATION FILED JULY 11. 1912.

Patented. Aug. 10, 1915.

ZTZZMB LL OC v iffovney ARTHUR J. CHARLTON, F wnsrroiua Massaomrsirrrs.

squeeze-Bonn Specification of Letters Patent.

PatentedAug. 10, 191-5.

\ Application filed July-17,1912. Seria1No.709,883.

To aZZ whom it may concern Be it known that I, ARTHUR. J. CHARLTON, a citizen of the Unitedistates, residing at \Vestford, in the county of Middlesex and Commonwealth of Massachusetts,hav invented a new and useful Improvement in Squeeze-Rolls, of which the following is'a specification, accompanied by drawings forming a part of the same.

My invention relates to squeeze rolls and more particularly to that class of squeeze rolls which are used in connection with washing and other like machines .for expressing liquids from various textile materials suchas yarn. The rolls are generally mounted in pairs in any well known manner, and it is customary to make one of the rolls of a pair with a yielding or compressible covering and the other roll-of the pair with an unyielding surface, although the'surface of both rolls may be compressible if desired. The yielding covering referred to is necessarily of a more or less soft material, preferably rubber, and is, therefore, incapable of always withstanding without damage the great strains resulting from. the more or less frequent bunehing of the textile ma terial being operated upon as it passes be:

tween the rolls. It is, therefore, necessary at times to make certain replacements or repairs of'more or less of the damaged covering and the main object of the present invention is to provide a pair of rolls of the type/ theb'ody portion 5 of. the lag bycementing,

referred to, one, at least, of the rolls having a yielding covering so constructed and .ar-

ranged that any damaged portion thereof may be quickly and easily replaced by anew section of covering without removing either roll from the machine or interfering in any way with any part of the machine other than the securing means for the damaged section of covering to be replaced or re, paired. 7

Further objects of my invention are to so mount the compressible covering of the roll as to protect it so far as possible from in ury due to its spreading when under heavy ressure, and to so mount the covering 0 the roll that it will be propelled without danger of slipping on the roll.

Still further objects. and advantages of w my invention will become obvious as the description proceeds.

In the accompanying drawings I show unyielding surface. Fig. 2 is a longitudinal sectional view of the upper roll. Fig. 3 is a cross section of the upper roll on line '33 of Fig. 1. Figs. 4 and 5 are perspective views of the outer and inner surfaces, r'espectively of one of the removable lags of the upper roll. Fig. 6 is an end view of the upper roll.

Similar reference characters refer to similar parts throughout the several figures.

The compressible roll comprises a rigid metal core 1, the ends of which are reduced to form gudgeons 2 which are to turn in suitable bearings in the machine. Between the gudgeons the core 1 is of polygonal cross section, it being shown as octagonal, a1:

though the number of sides may obviously .be different if desired. Mounted upon each face 3cofthe polygonal core is ailag 4 com posed ofa rigid metallic body portion 5,

coveredon its outer face with a suitable cov- ,.-erin er;.1ayer of some'relatively soft yieldvain and coI'npres'sible material, preferably r u bier; This covering may be attached to by forming ribs on the body portion to engage suitable corresponding ribs on the cover, or in any other suitable manner.

- To prevent lateral or longitudinal disin the corresponding face of the core. The

contacting longitudinal edges of adjacent lags are beveled and fitted so that no opening is left between them, and the outer surfaces of the compressible coverings 6. are so curved that, when mounted on the core 1, the whole forms a perfect cylinder, as shown in Fig. 3. It is obvious that, because of the polygonal shape of the core, the'line of action of the propelling force exerted by the core on the lags as the roll is revolved is not tangent to the surfaces of the core and lags I as would be the case were the core cylindrical; there is, therefore, a certain amount of action between the core and lags due solely to the peculiar shape of the core. An-

other advantage of a polygonal core is that accommodate a suitable cap 9, screws be-. ing passed through each cap and the corresponding reduced end of the body-portion of the lag and into the core to cooperate with the ribs 7 and grooves 8- in holding the lags securely in place. The caps 9 are substantially segmental in form, and correspond in angular amplitude, to the lags with which they are associated. The caps 9 preferably of uniform width exert a clamping action on the lags, spreading the pressure of the screw heads out across the entire width of the ends of the lags, thereby holding the lags more firmly and evenly in place than the screws alone could do. The

outer edges of the caps Q are curved so that each set of caps forms a slightly projecting circular peripheral Wall abutting against the ends of the compressible coverings of the lags.

To limit the end play of the roll in its bearings and, incidentally, to give a finished appearance to the ends of the roll, a collar 10 is slippedover each gudgeon against the corresponding end of the polygonal section ofthe core and fastened in place by screws or otherwise. The lags are slightly shorter than the polygonal section of the core so that the collars 10 are held slightly away from the ends of the lags 4 and caps 9, as shown in Fig. 2. This permits any lag to be removed and replaced without loosening either collar. The caps'9 project radially to form abutting walls for the cornpressible coverings of thedags. .This protects the ends of the compressible coverings and prevents their spreading endwise and cracking or rupturing when a bunch ofthe material being operated upon is passing betwleien the rolls at or near one end of the re a The second roll 11, shown below in Fig. l, is preferably formed of an integral piece of metal. Its central portion 12 is cylindrical to cooperate with the cylindrical surface of the compressible roll and its ends are reduced to form suitable gudgeons as in the case of the compressible roll. A small portion of each end of the central portion 12 is reduced slightly in diameter to provide suitable recesses 13 which accommodate the caps 9 when the rolls are pressed together. One or both rolls may be positively driven in any suitable manner. It is obvious that the replacement of a damaged portion of the compressible covering 6 involves the replacement of only those lags which have been injured and that such replacement may be easily and quickly accomplished. Furthermore there is a great saving in expense over that involved in the replacement of a complete roll when a portion onlV of its covering has been damaged.

1 claim,

1. A squeeze roll comprising a core, an annular series of detachable lags carried by said core in interlocking relation therewith,

each lag consisting of a body portion and a compressible covering, with the outer surfaces of said body portions curved to present an unbroken cylindrical surface.

2. A squeeze roll comprising a core, 1ags= mounted on the core, and an annular series of segmental attaching devices for the ends of said lags, corresponding in number to the number of said lags, and constituting annular flanges surrounding the ends of saidlags. I

3. A squeeze roll comprising a core, lags carried longitudinally by said corein interlocking relation therewith, and each having a compressible outer surface terminating short of the'end of the lag, and means car- .ried by each lag beyond the ends of said compressible surface. for securing said lags to the core, said means constituting annular flanges at each end of said compressible surface to prevent the spreading thereof.

4. A squeeze roll comprising a core, lags carried by said core in interlocking relation therewith, with their longitudinal surfaces in contact and their outer surfaces forming an unbroken cylindrical surface, the ends of said lags being cut away to provide recesses, and caps disposed within said recesses, and projecting above the outer surfaces of said lags to form annular flanges at each end of the roll.

Dated this 13th day of July 1912.

ARTHUR J. CHARLTON.

Witnesses PENELOPE COMBERBACH, NELLIE WHALEN. 

